Email validator that hits freemium providers one by one and returns normalized response.

Provides a clean DSL to validate params for controller actions.

Rails plugin that uses George Carlin's list of seven dirty words (aka swear words, aka cuss words) to check for decency on ActiveRecord model attributes.

Validate iban

Validations for making ActiveRecord objects immutable.

ActiveModel validator that ensures Word-tags hasn't been accidentally pasted into WYSIWYG attributes.

Delegates validation between objects

log active model validation errors to get better insights in the usability of your forms

Adds String#valid_date? method to add utility to the Rails String#to_date method. Determines whether the string contains a valid date, to check before converting to a date and avoiding an exception.

Adds valid transition validations to AR.

A tiny gem for value objects.

values_for makes your ActiveRecord-backed class work with an enumerable type. Instead of existing ActiveRecord plugins such as enum_fu, which store the enumerable attribute as an integer, values_for stores the content of the enumerable attribute in a varchar column of the database....

Simple and easy to use validator inspired by Laravel Validator

Retrieve user information from Steam.

A ruby wrapper for the http://www.vast.com/ api

A gem to calculate VAT of multiple products with differently VAT percentages.

Helper to calculate the VAT rate

Ruby Client for the Vault Gem

Provisioning utility for HashiCorp's Vault

Provides a way to access data of a vBulletin forum, specifically ones that you don't control